Atmospheric roll drier



Sept. 19, 1933. s. WOOD 1,927,694

ATMOSPHERIC ROLL DRIER Filed April 29, 1931 2 Sheets-Sheet l j g1 17 my flTTORNEY-S WIT/Yeas i P 7 BY Sept. 19, 1933. 5 WOOD 1,927,694

ATMOSPHERIC ROLL DRIER Filed April 29, 1951 2 Sheets-Sheet 2 Jarg5 flTTOR/YEYS or doctorplate which is much more efficient in Patented Sept. 19, 1933 UNITED STATES ATMOSPHERIC ROLL meter:

I Samuel Wood, West Allis, Wis. I

Application Apfil29; 1931. SBIiiZ/I NO. 533,728 I 11 Claims.

This invention relates to a new and improved atmospheric rolldrier. V

"The main object of my invention isto provide a drier of this character having a scraper operation than anything known to the art;

, Another object is to provide a drier in which a single scraper or doctor plate will function to scrape material from two simultaneously rotat- 0 ing rolls.

Another object is to provide apparatus of this character in which the scraping edge of the scraper or doctor plate may be sharpened while the apparatus is in operation, and while the scraper is functioning as such.

Other objects and advantages relate to -the size, shape and arrangement of parts, all as will more fully appear from the following description taken in connection with the accompanying drawings in which: t

Figure 1 is a top plan view of the drier.

Figure 2 is 'a side elevation of thesame.

Figure 3 isa plan view, partially broken away,

on line 3- -3 of Figure 2.

Figure 4 is a section on line 44 of Figure 1. Figure 4a is a section on line la-4a of Figure 2. v

Figure 5 is a section on line 5-5 of Figure 1. Figure 6 is a section on line 66 of Figure 5. Figure '7 is a section on line 77 of Figure 2. Figure 8 is a section on line 8-8 of Figure 7. Figure 9 is a section on line 99 of Figure 2. Figure 10 is a section on line 10'10 of Figure 1. v

Figure 11 is a section on line 11-11 of Figure 1. r

My device comprises the main frame '1 and a hollow roll 2 having tubular journals 3 and 4 positioned in suitable bearings in the opposite ends of the frame 1. w

A second roll 5 is positioned in parallel relation with roll 2, and has tubular journals 6 and 7 positioned in suitable bearings at the opposite endsofframel.

A conduit 8 connected to a suitable source of steam, passes through a support 9 and vextends through journal 4 a short distance into the interior of roll 2. j

A similar conduit 10 also connected to a source of steam, extends through'a support 11 and tubular journal '7 a short distance intoroll 5.

On the outer end of tubular journal 3, I

- provide a pulley 12 so that roll 2-may be rotated shaft 28.

"shaft 35 is a gear 3'7 which abuts (o1. are-p tubular'journal 3 into roll 2 andto 'afl point adjacent the bottom thereof as may best be seen in dotted lines on Figure 2. V

Conduit 13 is connected to a'suitable pump suction device so that any water condensed from the steam in roll 2 may be drawn therefrom.

vA second pulley 15 is secured to the outer end oftubular journal 6 so that roll 5 may be rotated' in a similar way as roll 2 A tubular shaft 16 is secured to pulley l5 and extends outwardly through a support 17 On the outer end of shaft 16 is secured a gear 18. An exhaust conduit 19extends through tubularshaft l6 and tubular journal 6 into roll 5 and downwardlyto a point adjacent the bottom thereof so that water in roll 5' may be withdrawn therefrom in the same manner as the water which'may accumulate in roll 2.

Gear 18 is operatively connected by a chain journaled in the base of'framel, and which extends at right angles to shaft 22 to the opposite side of frame 1.. On the other end of shaft 25 is secured a bevel gear 26 in mesh with a bevel gear 27 which is secured'to thevlower end of a vertical (See Figure 2.) 7 On the upper end of shaft v28which is suitably journaled in frame 1, isa gear 29. Secured 24 secured to the end of a shaft 25 which is to shaft 22 adjacent gear 21-is a bevel gear 30 which is in mesh with a bevel gear 31'which is securedto the lower end of a vertical shaft 32 journaled in frame 1. On the upper end of shaft 32 is secured a gear 33. V

Referring to Figures 5 and 6, gear 29 is in mesh'with a gear 34 which is rotatably mounted on a vertical shaft 35 which depends-from the upper end of frame 1, and which is held against, axial displacement by a threaded dowel 36.

Beneath gear 34 and rotatably mounted on against a shoulder38 on'shaft 35. i v

c Rotatably mounted on shaft 35 above gear 34 and secured to gear .34 as by screws 39, is a'-- guide roll l0; On theupper endjo f guide roll 40 and secured thereto as byvs'crews 41, is a gear 42' also rotatably mounted on shaft 35. Superimposed on gear 42 andsecuredtheretoby ward displacement by a collar 46.

ill

.47 which is in mesh with gear 34.

screw 41 is a guide disk 42" of a diameter to overlie the teeth on gear 42.

I provide a second depending shaft 43 in spaced parallel relation to shaft 35 and held against axial displacement by a dowel 44.

On the lower end of shaft 43 is rotatably' mounteda gear 45 which is held against down- Gear 45 is in mesh with gear 37. Integral with gear 45 andabove the same is another gear Above gear 7 androtatably mounted on shaft 43 is a guide roll 48 in spaced relation to guide roll 40. Rotatably and slidably mounted on shaft 35 beneath gear 37 is a pulley or sheave 49. v

.The lower face of gear 37 and the upper face of pulley 49 carry clutch teeth so that when pulley 49 is moved upwardly into clutching relation with gear 37, it will rotate therewith.

For the purpose of moving pulley 49 into and out' of clutching engagement with gear 3'7, I

provide a lever 50 (see Figure 4a) having one .end pivotally mounted on frame 1 "and having a ring 52 at its centralpoint, which ring 52enfcircles'the hub of pulley 49.

Referring 'toflsFfigures 2 and 11, the shaft 32 has secured thereto, asby a pin 53, a guide roll 54 upon which is positioned the gear 33 and a guide disk 55, disk 55 and gear 33 being secured to guide roll 54 asbya screw 56.

C 'A djacent shaft 32 and in parallel relation thereto is positioned a stub shaft 57 which carries a rotatable guide roll 58 secured against downward displacement by a collar 59 secured to shaft 57 as by a pin 60.

The upper ends of shafts 32 and 57 are secured to frame 1111 the same manner as are shafts 35 and 43 previously described.

Thescraper or doctor plate '61 is an endless band L-shapedin cross section, andhaving the -of the other.

Guiding support 63 comprises a bar 65'which extends approximately the'full length of roll 2 and which has the opposite ends of its upper edge pivotally'mounted on frame 1.

.At each end of guiding bar 63, there isprovided an upwardly and outwardly extending arm 66 having a threaded aperture therethrough.

Adjacent arms 66 and in spaced relation .thereto, areprovided brackets 6'7 having a recess 68in'theouter face of its upper end.

' Ascrew. 69 is threaded through the threaded aperture in arms 66 and its other end is seated in theaperture 68 in bracket 67 so that the combination of the arm 66, bracket 67-and screw '69 gives thesame effect as what is commonly known as a builder screw, and the movement of the screw 69 through the aperture in arms 66 a will cause the arms 66 to be moved towards and from the'b'rackets 67 with the result. that the guiding support 63 will be lcaused to move about its pivots to move the lower end thereof towards and from the r0112. i

For the purpose of providing a convenient.

permit the passage therebetween of means for manipulating screw 69, I provide on the outer end thereof a hand wheel '70.

On the inner face of guiding support 63 is provided a slotted carrying bar 71 held in position as by screws '72. e 1

Bar 71 being slotted, it may be moved vertically with respect to guiding support 63 when screws 72 are loosened and may be secured'in any desired relative position within the limits of movement permitted by the slot therein. 7

The-lower end of bar '71 is oifset and has a slot 73 at the upper end of the offset portion.

The arrangement parts is such that the horizontal portion of the scraper 6 carrying the teeth 62 may be received in the slot '73 and the depending-portion of the. scraper 61 will then be positioned between the lower end of guiding support 63 and the offset portion of the bar '71.

The slot 73 is of aproper size and the space between the offset portionof bar 7 1 and guiding support 63 is sufficient to permit the longitudinal movement of scraper 61 when the same is. in

position. j V

For the purpose of keeping the proper frictional contact between scraper 61 and roll 2, I provide in the lower end of guiding support 63 a plurality, in this case shown as eleven, of thumb screws 74 preferably carryingonits inner end a'ball 75 in contact with thescraper 61.

The manipulation of thumb screws '74 will permit scraper 61 to be moved towards roll 2 until it is under the proper tension, balls '75 relieving friction on. scraper 61 when the same is moved longitudinally of'guiding support 63.

For an aid in guiding the, scraper '61 in its movement, I provide] on frame 1 two sets of guiding rolls 76 an'd W. f

The construction of the guide rolls 76 and '77 being similar, a description of one will be a description of the other.

Guiding roll '76 comprises an assembly in which is provided opposed parallel stub shafts '78 and 79 secured in position in frame 1 by dowels .or set screws 80 and 81.

On the lower end of stub shaft 73is. provided 1 a rotatablefguiding roll 82 held againstdown ward displacement by a collar 83 pinned to shaft On the lower. end of stub shaft79is provided a guiding roll .84 held against downward dis placement by a collar 85 keyed to shaft '79. g

' Guiding roll 84 has adjacent its upper end an annular groove 86 adapted to receive 'the'horizontal portion of scraper 61. Guiding 10118821 and 84 are spaced apart a'sufficient distance to the .depe'nd-,

ing portion of scraper 61., v 7

, When the scraper 61 is in position in the guiding supports63 and 64, and the guiding assemblies 76 and'77, it will also referring to Figure 5, be positioned with teeth 62 in mesh'with gear 42, and with the depending portion of the scraper 61 positioned between guiding, rolls 40, and 48 so that when gear 42 is rotated, the scraper" will be moved longitudinally of roll 2. Disk 42 'pre vents the teeth 62 on,scraper-61"from moving vertically out of engagement with gear 42.

.Forthepurpose of assisting in makin'g ;the

movement of scraper bar 61 uniform, it is, when in positionin the assembly disclosed in Figure 11,v positioned with the teeth 62 in mesh'with. gear 33, and with the depending portion of scraper 61 positioned betweenguiderolls 54 and .58 so that when gear 33 is rotated through the 4 rotation of shaft 32, the longitudinal movement Ti to of scraper 61 with respect to roll 5 will be effected. Disk 56 'preventsthe teeth 62 on scraper 61 from moving vertically'out of engagement with gear 33. I

The relation of the different gearing herein described is such that'when rotary motion'is transmitted to shaft 22 through gear 18, chain 20 and gear 21, gears 33 and 42 willbe rotated at a uniform speed with gear 33'moving one side of scraper 61 in one direction and gear 42 moving the opposite side of scraper 61 in the opposite direction so-that scraper 61 will be moved continuously from one roll to theother at a uniform rate of speed.

v Referring to Figures 7 and 8, I provide on frame 1 adjacent one end of guiding support 63 a grinding assembly 87 which comprises a slotted bracket 88 held in position as by screws 89, the slots permitting vertical adjustment of bracket 88 withrespect to frame 1.

The horizontal portion of the bracket 88 is also slotted and carries on its upper face, a plate 90 having an oifset arm 91.

The plate 90 is secured to bracket 88 as by bolts 92, the slots in bracket 88 permitting the plate 90 to be adjusted towards and from the scraper 61.

The plate 90 has secured thereto a bearing 93 through which extendsa shaft 9 1. Shaft 94 carries pinned collars 95 and 96 abutting against the opposite ends of bearing 93 to hold shaft 94 against axial displacement.

On the inner end of shaft 94, is secured in the usual manner, a grinding wheel 97.

On the opposite end of shaft 94 is secured a worm gear 98 in mesh with aworm 99 carried on a shaft 100 which is journaled in the end of the offset arm 91 of plate 90.

On the lower end of shaft 100 and beneath arm 91 is secured a sheave or pulley 101.

A belt 102 connects pulley 49 and pulley 101 for simultaneous movement.

When it is desired to sharpen scraper 61, bracket 88 is adjusted to bring grinding wheel 97 into the proper degree of contact with the scraping edge of scraper 61. Clutch lever 50 is then manipulated to bring pulley 49 into clutching relation with gear 38. The rotary movement of gear 34 will then, through gears 47, 45, 37 and pulleys 49 and 101, be transmitted to worm 99 and worm gear 98, to cause the rotation of shaft 94 and grinding wheel 97.

The speed of rotation of gear 34 being preferably comparatively slow, the gears 47, 45 and 37 are provided so that the worm 99 will be rotated at a considerably higher speed than is gear 34.

Inasmuch as grinding compound which might adhere to scraper 61 might be injurious to the material being scraped from the rolls 2 and 5, I prefer to provide on frame 1 a wiper as 103 here shown as being of a type wherein a Wiping pad 104 is held by a spring arm 105 against scraper 61.

The position of wiper 103 is such that it will wipe scraper 61 after the same has left the grinding wheel 97 and before it comes into contact with the roll 5.

For the purpose of feeding the material to be dried to the rolls 2 and 5, I provide on frame 1 a trough 106 which extends longitudinally of rolls 2 and 5, and which is positioned above and between them.

Trough 106 is indicated in full lines on Figure 2 and in dotted lines on Figure 1.

- scraper engaging both of the rolls and including The trough 106 is provided in its bottom with a plurality ofapertures 107- so that material placed therein will drop downwardly on to rolls 2 and 5,'which are caused to rotate" in opposite directions, and the directions indicated by the arrows on Figure-4.

The material to be 'dried'will adhere to vrolls 2 and 5 and will be; carried downwardly and upwardly tothe scraper 61 which will scrape the dried material from the rolls. .On each side of frame -1, I provide a trough 108 which is'positioned' to catch thematerial which ,isfscraped from the rolls'2 and 5.

The material collected in troughs 198 may be carried away in any desired Way.

' It will beu'nderstood-that the type of heated roll and the method of heating the same may be varied asinay the means employed for driving the rolls and the mechanismfor moving the belt and driving the grinder.

It will also be understood that various changes may be made in different parts of the apparatus here shown without departing from the spirit of my invention, for although I have shown and arrangement of parts as an exemplification of an embodiment of my invention, Ido not desire to restrict myself to the: exact size, shape or arrangement of parts, as various changes may be made Within the scope of the appended claims.

Iclaim:

1. An atmospheric roll drier comprising a roll, means for rotating the roll, an endless soraper engaging the roll, and includingan angle edge having rack teeth, a driven'gear engaged with the rack teeth for. moving the scraper longitudinally of the roll, and means for sharpening the scraper during such movement.

2. An atmospheric roll drier comprising a roll, means for rotating the roll, an endless scraper engaging the roll, and including an angle edge having rack teeth, a driven gear engageable with the rack teeth for continuously moving the scraper longitudinally of the roll, and means for sharpening the scraper during such movement.

3. An atmospheric roll drier comprising a pair of rolls, means'for rotating the rolls, an endless scraper engaging both of the rolls, and including an angle edge, guidemembers receiving the angle edge, and means engaged with the angle edge of the scraper for continuously moving the scraper longitudinally of the rolls in opposite directions.

4. An atmospheric roll drier comprisingv a pair of rolls, means for rotating the rol1s,'an endless scraper engaging both of the rolls and including an angle edge, guide members receiving the angle edge, means engaged with the angle edge of the scraper for moving the scraper longitudinally of the rolls in opposite directions, and means for sharpening the scraper during such movement.

a 5. An atmospheric rolldrier comprising a pair of rolls, means for rotating the rolls, an endless an angle edge, guide rollers having annular grooves therein receiving the angle edges, means engaged with the angle-edges for'continuously moving the scraper longitudinally of the rolls in opposite directions, and means for sharpening; the scraper during such movement.

6. An atmospheric roll drier comprising a roll, means for rotating the roll, an endless scraper engaging the roll, a guiding support for the described a specific structure and. form and 105 v scraper, means for securing the guiding supportgzlso in aselected one of'a plurality of positions with driven gearengaged-With the teeth for positively moving therscraper longitudinally of the roll, and means for sharpening the scraper durin such movement, 1

9. An atmospheric roll drier comprising a pair of rollers, means for rotating the rollers, an endless scraper engaging both of the rollers and including an angle edge, guide means for the scraper longitudinally of the scraper receiving the angle edge, and meansior moving the scraper longitudinallyofthe rollers. 10. An atmospheric roll drier comprising a pair of rollers, means for rotating the rollers, an 7 endless scraper engaging both of the rollers and. including anrangle edge, guide means for, the scraper receiving the angle edge, means for movingthe scraper longitudinally of the rollers, and means for sharpening the, scraper during such movement. 7 V

11. An atmospheric roll drier comprising a pair of rollers, means for rotating the rollers-arr endless scraper engagingboth of therollers and including an angle edge, guide means for the scraper receiving the angle edge, said scraper being provided with rack teeth, and a driven gear engaged with the teeth for moving the scraper longitudinally of the rollers. f

-, SAMUEL WOOD, 

